How to market your indie game

I'm not doing this full-time and an audience is more important than the cash to me at this point, but anyone have any ideas on how to target 23-26 years olds that loved late 90s monster-taming/breeding games like Dragon Warrior Monsters and Pokemon?

/r/indiedev is for indie developers and gamers to share whatever they want (be it game development, their favorite games or just some cool images, GIFs or music from an indie game) in a casual community-run environment.
It supplements places like /r/gamedev and /r/indiegaming with content that those subreddits can't provide.
But of course if you're an indie gamer looking for things about indie gaming, this place also welcomes you. After all, every gamer is a potential indie developer!